Grinding apparatus.



, PATENTED APR. 30, 1907. OOOLIIDGB.

G. GROSVENOR & F. A.

' GRINDING APPARATUS. APPLIGATION FILED MAY27,1005.

2 SHEETS-SHEET 1.

WITNESSES: l J

PATENTED APR. 30, 1907 0. GROSVVENORA P. A. OOOLIDGE.

GRINDING APPARATUS;

APPLICATION FILED MAY27,1905.

2 srianrs-snnm 2.

WITNESISI:

' UNITED STATES PATENT OFFICE.

GRAHAM GROSVENOR ANI. FREDERIC A. OOOLIDGE, OF NEW YORK, N. Y., ASSIGNORS TO OTIS ELEVATOR COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

GRINDING A PARATUS.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed May 27,1905. Serial No. 262,549-

To all whom it may concern.-

Be it known that we, GRAHAM. Gnosvnnon and FREDERIG A. Common, citizens of the United States, residing in the borough of Manhattan, county of New York, and State of New York, have invented a new and use ful Improvement in Grindlng Apparatus, of

which the following is a specification.

This'invention relates to amachine designed for grinding surfaces whether in the same or in angularly related planes, and it provides an apparatus in the nature of an apphance partlcularly adapted for grinding or sn'mlarli reparing elevator guide surfaces particu ar y the portions contiguous to the abutting ends of the assembled sections at the connecting joints therebetween.

The present apparatus is adapted for use while temporarily affixed or secured to one of the sections or lengths of the guide (the several sections being assembled in position vertieally of the elevator well) adjacent to the joint between such section and the contiguous section and enables the operator by manipulation of the ower-driven rinding wheel to smooth up t 1e surfaces at t e joint, and thereby bring the guide surfaces fair with each other even though (as is generally other as the result of carelessness in construction,.c0nstructional defects, or economics in erection.

A grinding apparatus constructed according to the present invention, embodies a grinding wheel, a clamp for temporarily securing the apparatus in place, and features of adjustment enabling the grinding wheel to be broughtinto contact with each of the guide faces in turn, the attachment of the machine, the several possible adjustments, the movement of the grinding wheel toward and away from the surface to be ground, and the traverse of the wheel across the surface being within the ready control of the operating mechanic.

In the drawings accompanying the present specification, Figure 1 is a front elevation'of a grinding apparatus embodying the present invention, the apparatus being indicated in a position ready for use. Fig; 2 is a plan view of Fig. 1. Fig. 3 is an horizontal section taken through the grinding wheel shaft in Fig. 1. Fig. 4 is a detail view of oneof the corrugated wear-pieces with which the members of the clamping jaw are. rovided. Fig. 5 is a cross section on the p ane of the line 5 5 in Fig. 3.

Similar characters of reference designate corresponding parts in all figures.

While the present invention is applicable to the construction of grinding a paratus susceptible of fulfilling various c'on itions in the arts, one of the most useful applications which we contemplate at the present time, is that of an apparatus for smoothing up the joints in assembled elevator guide-sections, along which run the bearing shoes on the car or cage in the well.

Having premised the foregoing general scope of the invention, its description will, for the purposes of explanation and intelli gent comprehension, be given with reference to such particular use.

The' usual form of elevator guide is T-shape,

the guide shoes running along the web of the guide. The present apparatus has a capacity,

clamping devicefor securing t e ap aratus adjacent to the joint on the guide at w iich the grinding is to be done. This clamping device may be of various constructions, that shown herein'answering the purpose and com rising a pair 01' clamping jaws 2, 3, capable oi being drawn together by a binding screw 4, to clamp the jaws against the guide web. The unthreaded or upper portion of the shank of the binding screw fits somewhat loosely in the opening in the clamping jaw,*ar 'd the clamp carries at its outer end asettirig-up screw 5, by which the outer ends of the jaw may be forced apart, and through a powerful lever-like action tighten the grip of the jaws on the web. Preferably, the inner faces of the jaw between which the -web is located, are provided with wear-resisting, friction-creating pieces, designed to increase the hold of the clamp on the opposite faces of the web. Such pieces may be in the nature of corrugated blocks of hardened steel, such as 6, screw, fastened to the inner faces of the jaws.

Jaw 2 is here provided with an enlargement or over-hanging boss 7, having a threaded socket for the engagement of a screw 8, by means of which an arm 9 (carrying other portions of the apparatus) may be firmly secured to the clamp, or if the screw be loosened per- Init the arm to be angularly adjusted about the axis of the screw before being firmly fastened in position.

It should be here stated that the grinding wheel may be moved toward and away from the clamp, that is, lengthwise of the elevator guide faces, arm 9 conveniently supporting a guide bar along which this movement is made; This guide bar 10 is here shown as of angular or squared cross section, and is secured to arm 9 by any suitable means, that here illustrated embodying a nut 1O.

Slidably mounted on guide bar 10 is a sleeve 11,.having heads 11, 11 at opposite ends. Between these heads there is "jun-r naled on the cylindrical surface of the sleeve a split clamp 12, having laterally extending ears 12, 12 connectedv by a clamping screw 12". Rigid with this split clamp is a radial extension 13, formed at its end with a hearing 14, in which is slidably mounted a sleeve 15. Bearing 14 is separated throughout its length at one ,point in its periphery, and on opposite sides of the plane of'scpa'ration are ears 14, 14 connected by a binding screw 14. When this latter screw is unloosened, sleeve 15 may he slid lengthwise of the hearing; by tightening the screw, the sleeve may be clamped in its adjusted position. The sleeve may also be turned in the bearing-to regulate the position of a grinding wheel shaft 16 mounted eccentrically in the sleeve.

Convenient grips or handles are provided for manipulating the parts during the progress of .the grinding operation, that is, to carry the grinding wheel shaft lfilengthwise of the guide bar 10, and to turn the sleeve 15 in its bearing to bring such shaft toward or away from the surface to be ground. The handles here shown comprise a wneel 17 secured to sleeve 15, and handles 18, 18 rigid with hearing 14.

Secured by any suitable means to shaft 16 is a grinding wheel 19. Preferably, a dustproof joint vis placed between shaft 16 and sleeve -15. In the construction here illustrated, a cup-shaped part 20 rigid with the grinding wheel is forced over a collar 21 rigid with shaft 16, the annular lip of part 20 extending over and forming a running lit with an extension. of part 15 concentric with shaft 16.

Motion is transmitted to shaft ,1 6 in any suitable manner, in this instance through a. flexible shaft, not shown, which is connected the handles 18 and wheel 17, and moving the grindingwheel along the surface lengthwise and crol swise, sleeve 15 being turned sufticiently to give the desired cut. 01 having rotarily adjusted the sleeve to the proper extent, screw 14 may be turned down to clamp the sleeve fast, and the parts moved lengthwise of guide bar 10. It is evident, moreover, that the angular character of this bar will hold the grinding wheel up to its wor h further adjustment of the parts by swinging arm 9, for instance, until the surface of the grinding wheel is brought in parallelism with one of the side faces of the elevator guide, will enable the grinding of such surface to be effected. The iopposite face may be ground after a preliminary adjustment involving the removal of sleeve 11 from guide bar 10, the turning of the parts over, that is, upside down, and the reengagement of the sleeve with the guidebar. The present apparatus, therefore, obviously possesses a capacity enabling the grinding of bothside surfaces as well as the edge surface of an elevator guide to be effected at one setting that is when once the clamping device is secured in position, a few simple adjustments will permit the grinding wheel to be so shifted as to bring it into proper position for grinding said surfaces.

While handles have been specified and illustrated as aids in effecting movement of the grinding wheel longitudinally of the elevator guide, they may obviously be omitted if such movement is accomplished in otherways.

Having described our invention, we claim;

1. In a grinding apparatus, the combina tion of a guide bar, a grindingwhcel shaft ad- ICQ justable ina plane transverse to and about an axis coincident with the axis of said guide bar, and means for holding the shaft in its position of adjustmol'it. v

2. in a grinding apparatus, the combina tion of a guide bar of angular cross section, a grinding wheel shaft slidably 'n'muntcd on said bar and adjustable in a plane transverse to and about an axis coincident with the axis of the bar, and means for holding the shaft in posed at an angle in its adjusted position, and means for holding said shaft in its position of adjustment in said plane.

4. In a grinding apparatus, the, combinajtlOfl of a guide bar, a bearing whose axis is disto the axis of the bar, said earin beingslidably mounted on said. bar

erally and holdin it and a justable about the axis of said bar,

- port for the apparatus and means means for holdin thebearing in its position of adjustment about said axis, a grinding wheel shaft carried by said bearing, a supextending etween said guide and said support for adusting the guide laterally and holding it in its adjusted position.

5. In'a grinding apparatus, the combination of a guide bar, a bearing whose axis is disposed at an angle to the axis of the bar,

and a said bearing being slidably mounted on said bar and adjustable about the axis of said bar, means for holdin the bearing in its position of-adjustment about said axis, a grinding wheel shaft carried by said bearing, means for moving said shaft toward and awa from the surface to be ground, a su port or the apparatus and means extending between said guide and saidsupport for ad usting the guide laterally and holding it in its adjusted pos1t1on.

6. In a grinding ap aratus, the combinationof a aterally a justable guide bar, a bearing whose axis is disposed at an angle to the axis of the bar, said bearin beingslidably mounted on said bar and adjustable about the axis of said bar, a sleeve mounted to turn and to slide axially in'said bearing,

indin mounte in sai sleeve. I

' 7. In a grinding apparatus, the combination of a pivotally adjustable arm, a uide bar of angular cross section extending Iaterwheel shaft eccentrically ally therefrom, a bearing whose axis is dis osed at an angleto the axis of the bar said earin being slidably mounted on said bar and a justable about the axis of the bar, a sleeve mounted to turn and slide axially in said bearing, and a grinding wheelshaft eccentrically mounted in said sleeve.

8. In a grinding apparatus, the combination of a clam ing device, .a guide bar adjustable lateral y in a curved path about said clamping device, a bearing whose axis is disposed at. an angle to the axis of the bar, said eari bei slidably mounted on said bar and a justa le about the axis of said her, means for holding the bearing in its position of adjustment about said axis, and a grinding wheel shaft carried by said bearing.

9. In a rinding apparatus, the combina tion of a c amping device, a guide bar adjustable laterally in a curved, ath about said clamping device, a bearing w oseaxis is disposed at an angle to the axis of the bar, said earin being slidably mounted on the bar and a justable about the axis of said bar, means for holding the bearing in its position of'adjustment about said axis, a grinding wheel shaft carried by said bearing, an means for movin said shaft toward and away from the surface to be ground.

10. In a rinding a paratus, the combination of a clam ing .d dvice, a guide bar adjustable lateral y in a curved path about said clamping device, a bearing whose axis is disosed at an angle to the axis of the bar, said carin being slidably mounted on said bar and adjustable about the axis of said bar, a

sleeve mounted to move in said bearing, and

in said sleeve.

11. In a grinding apparatus, the combination of a clamping device, an arm ivotally adjustable thereon, a uide bar 0 angular cross section extending bearing whose axis is disposed at an angle to the axis of the bar, said bearin beingslidably mounted on said bar, and adjustable about the axis of the bar, a sleeve mounted to turn and slide axially in said bearing, and a grinding wheel shaft eccentrically mounted in said sleeve.

aterally therefrom, a

12. A grinding apparatus comprising in combination, a clamping device, an arm pivulde' bar otally adjustable onsaid device, a of angular cross section secured to the arm, a sleeve slidabl mounted on said bar, a split clamp rotata ly mounted on said sleeve, a split bearing rigid with said split clamp, a s eeve mounted in said bearing, a shaft eccent-rically mounted in said latter mentioned sleeve, and operating handles substantially as set forth.

13. In a grinding apparatus, the combination of a clampin device, a grinding Wheel, and means of adjustment com rising two axes of adjustment parallel to t 1e plane of rotation of the grinding wheel whereby sald wheel may be positioned at one setting of the clamping device to grind surfaces whose planes are disposed at an angle to. each other.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

GRAHAM GROSVEN'OR. rnnnnmo A. coonmen Witnesses:

' PIERSON L.'WnLLs, GERTRUDE TINGER. 

